An additional strap has been added on the inside of the bag (1), as shown in these cut-away drawing. This was an addition recommended by the client and was shown to be needed after the model was made.
It is a very simple addition. A piece of webbing that has been stitched into place to create loops.This allows for the strap to be moved up or down depending on its need and desired support.
The support comes from an eyeleted piece of webbing (2) that is attached to the bag with cord. This cord is simply slid through the loops on the bag (1) and tided off on the supporting webbing (2) at the desired length.